Chuck Lever cc9a903d91 svcrdma: Change maximum server payload back to RPCSVC_MAXPAYLOAD ... Both commit 0380a3f375 ("svcrdma: Add a separate "max data segs" macro for svcrdma") and commit 7e5be28827 ("svcrdma: advertise the correct max payload") are incorrect. This commit reverts both changes, restoring the server's maximum payload size to 1MB. Commit 7e5be28827 based the server's maximum payload on the _client's_ RPCRDMA_MAX_DATA_SEGS value. That was wrong. Commit 0380a3f375 tried to fix this so that the client maximum payload size could be raised without affecting the server, but managed to confuse matters more on the server side. More importantly, limiting the advertised maximum payload size was meant to be a workaround, not the actual fix. We need to revisit https://bugzilla.linux-nfs.org/show_bug.cgi?id=270 A Linux client on a platform with 64KB pages can overrun and crash an x86_64 NFS/RDMA server when the r/wsize is 1MB. An x86/64 Linux client seems to work fine using 1MB reads and writes when the Linux server's maximum payload size is restored to 1MB. BugLink: https://bugzilla.linux-nfs.org/show_bug.cgi?id=270 Fixes: 0380a3f375 ("svcrdma: Add a separate "max data segs" macro") Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>		2015-08-10 16:04:57 -04:00
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Makefile	rpcrdma: Merge svcrdma and xprtrdma modules into one	2015-06-04 16:56:02 -04:00
fmr_ops.c	xprtrdma: Reduce per-transport MR allocation	2015-06-12 13:10:37 -04:00
frwr_ops.c	NFS client updates for Linux 4.2	2015-07-02 11:32:23 -07:00
module.c	rpcrdma: Merge svcrdma and xprtrdma modules into one	2015-06-04 16:56:02 -04:00
physical_ops.c	xprtrdma: Remove ->ro_reset	2015-06-12 13:10:37 -04:00
rpc_rdma.c	xprtrdma: Acquire MRs in rpcrdma_register_external()	2015-06-12 13:10:37 -04:00
svc_rdma.c	rpcrdma: Merge svcrdma and xprtrdma modules into one	2015-06-04 16:56:02 -04:00
svc_rdma_marshal.c	svcrdma: Keep rpcrdma_msg fields in network byte-order	2015-06-04 16:55:59 -04:00
svc_rdma_recvfrom.c	Merge branch 'for-4.2' of git://linux-nfs.org/~bfields/linux	2015-06-27 10:14:39 -07:00
svc_rdma_sendto.c	svcrdma: Clean up svc_rdma_get_reply_array()	2015-07-20 14:58:47 -04:00
svc_rdma_transport.c	svcrdma: Change maximum server payload back to RPCSVC_MAXPAYLOAD	2015-08-10 16:04:57 -04:00
transport.c	NFS client updates for Linux 4.2	2015-07-02 11:32:23 -07:00
verbs.c	NFS client updates for Linux 4.2	2015-07-02 11:32:23 -07:00
xprt_rdma.h	svcrdma: Change maximum server payload back to RPCSVC_MAXPAYLOAD	2015-08-10 16:04:57 -04:00